Selective Catalytic Reduction of NOX on Cr-Mn Mixed Oxide at Low Temperature

Abstract:

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The solid state reaction method, coprecipitation method and citric acid method were employed for the preparation of Cr-Mn mixed-oxide catalysts. Experimental results showed that this catalytic system has good selective catalytic reduction (SCR) properties of NOx by ammonia in the presence of excess oxygen at low temperature (80-220°C). 97.8% conversion of NOx with 100% selectivity of N2 had been achieved on Cr-MnOx mixed oxide prepared by the citric acid method at 120°C with the space velocity of 30,000 h-1. X-ray diffraction, BET were adopted for the characterization of the active phase. The characterization results showed that a new crystal phase CrMn1.5O4 generated in mixed oxides which was the active center of the Cr-Mn catalysts.

Info:

Periodical:

Advanced Materials Research (Volumes 233-235)

Edited by:

Zhong Cao, Lixian Sun, Xueqiang Cao, Yinghe He

Pages:

1564-1567

DOI:

10.4028/www.scientific.net/AMR.233-235.1564

Citation:

Z. H. Chen et al., "Selective Catalytic Reduction of NOX on Cr-Mn Mixed Oxide at Low Temperature", Advanced Materials Research, Vols. 233-235, pp. 1564-1567, 2011

Online since:

May 2011

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Price:

$38.00

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